Why can't I speak English?

1 ：名無しさん＠英語勉強中 ：2017/11/20(月) 01:15:52.88 ID:lWAkUx6rxHAPPY.net

Ive been studying this language for almost 20 years now, and
I dont know why i cnat speak english well?
i mean i understand English somewhat, but i never speak d-sent English even though i study for long time.
why is that. thata make s me very angry. and frusrated